/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:46,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:46,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:46,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:46,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:46,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:46,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:46,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:46,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:46,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:46,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:46,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:46,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:46,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:46,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:46,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:46,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:46,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:46,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:46,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:46,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:46,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:46,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:46,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:46,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:46,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:46,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:46,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:46,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:46,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:46,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:46,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:46,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:46,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:46,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:46,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:46,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:46,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:46,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:46,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:46,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:46,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:58:46,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:46,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:46,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:46,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:46,567 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:46,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:46,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:46,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:46,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:46,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:46,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:46,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:46,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:46,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:46,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:46,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:46,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:46,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:46,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:46,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:46,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:46,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:46,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:46,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:46,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:46,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:46,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:46,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:46,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:46,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:58:47,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:47,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:47,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:47,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:47,104 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:47,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 00:58:47,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89941c4ee/5d65df39bb674b90b52e58781ac2e093/FLAGaac21ecc7 [2020-09-25 00:58:47,838 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:47,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 00:58:47,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89941c4ee/5d65df39bb674b90b52e58781ac2e093/FLAGaac21ecc7 [2020-09-25 00:58:48,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89941c4ee/5d65df39bb674b90b52e58781ac2e093 [2020-09-25 00:58:48,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:48,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:48,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:48,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:48,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:48,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3a7124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48, skipping insertion in model container [2020-09-25 00:58:48,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:48,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:48,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:48,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:48,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:48,823 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:48,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48 WrapperNode [2020-09-25 00:58:48,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:48,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:48,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:48,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:48,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:48,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:48,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:48,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:48,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:58:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:49,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:49,818 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 00:58:49,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:49 BoogieIcfgContainer [2020-09-25 00:58:49,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:49,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:49,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:49,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:49,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:48" (1/3) ... [2020-09-25 00:58:49,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb02e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:49, skipping insertion in model container [2020-09-25 00:58:49,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48" (2/3) ... [2020-09-25 00:58:49,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb02e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:49, skipping insertion in model container [2020-09-25 00:58:49,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:49" (3/3) ... [2020-09-25 00:58:49,836 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 00:58:49,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:49,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 00:58:49,883 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 00:58:49,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:49,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:49,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:49,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:49,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:49,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:49,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:49,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 00:58:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:58:49,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:49,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:49,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:49,971 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 00:58:49,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:49,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033451838] [2020-09-25 00:58:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:50,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:50,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:58:50,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 00:58:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 00:58:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:50,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:58:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:50,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:50,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:50,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:58:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:50,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033451838] [2020-09-25 00:58:50,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:50,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:58:50,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024029941] [2020-09-25 00:58:50,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:58:50,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:58:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:50,687 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-25 00:58:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:51,018 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-09-25 00:58:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:58:51,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-25 00:58:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:51,037 INFO L225 Difference]: With dead ends: 277 [2020-09-25 00:58:51,038 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 00:58:51,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:58:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 00:58:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-25 00:58:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 00:58:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-25 00:58:51,109 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-09-25 00:58:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:51,110 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-25 00:58:51,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:58:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-25 00:58:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:58:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:51,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:51,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:51,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-09-25 00:58:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:51,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445032435] [2020-09-25 00:58:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:58:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 00:58:51,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:58:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 00:58:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:58:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:51,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:58:51,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445032435] [2020-09-25 00:58:51,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:51,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:51,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249387329] [2020-09-25 00:58:51,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:51,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:51,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:51,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:51,418 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-09-25 00:58:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:51,704 INFO L93 Difference]: Finished difference Result 295 states and 318 transitions. [2020-09-25 00:58:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:51,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-25 00:58:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:51,707 INFO L225 Difference]: With dead ends: 295 [2020-09-25 00:58:51,707 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 00:58:51,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 00:58:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-09-25 00:58:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 00:58:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-09-25 00:58:51,724 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 20 [2020-09-25 00:58:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:51,724 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-09-25 00:58:51,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-09-25 00:58:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:58:51,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:51,726 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:51,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:51,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:51,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1840738898, now seen corresponding path program 1 times [2020-09-25 00:58:51,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:51,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823185619] [2020-09-25 00:58:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:58:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 00:58:51,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:58:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:58:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:58:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:52,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:52,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:58:52,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:52,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:52,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:58:52,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823185619] [2020-09-25 00:58:52,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:52,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:58:52,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14862249] [2020-09-25 00:58:52,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:58:52,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:58:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:58:52,072 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 6 states. [2020-09-25 00:58:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:52,399 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2020-09-25 00:58:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:58:52,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 00:58:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:52,402 INFO L225 Difference]: With dead ends: 262 [2020-09-25 00:58:52,402 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 00:58:52,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:58:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 00:58:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2020-09-25 00:58:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 00:58:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-25 00:58:52,422 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 38 [2020-09-25 00:58:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:52,422 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-25 00:58:52,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:58:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-25 00:58:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 00:58:52,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:52,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:52,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:52,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:52,426 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-09-25 00:58:52,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:52,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930747371] [2020-09-25 00:58:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:58:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:58:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 00:58:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 00:58:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:58:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:57,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:57,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:57,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:58:57,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:58:57,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930747371] [2020-09-25 00:58:57,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:57,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:57,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891327132] [2020-09-25 00:58:57,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:57,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:57,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:57,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:57,528 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-09-25 00:58:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:57,736 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-09-25 00:58:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:57,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 00:58:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:57,738 INFO L225 Difference]: With dead ends: 244 [2020-09-25 00:58:57,738 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 00:58:57,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 00:58:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-25 00:58:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 00:58:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-25 00:58:57,749 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-09-25 00:58:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:57,750 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-25 00:58:57,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-25 00:58:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:58:57,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:57,753 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:57,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:58:57,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-09-25 00:58:57,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:57,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723739275] [2020-09-25 00:58:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:59:02,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:59:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-09-25 00:59:02,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 00:59:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:59:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:02,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:59:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:59:02,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723739275] [2020-09-25 00:59:02,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:02,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:59:02,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380224681] [2020-09-25 00:59:02,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:59:02,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:02,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:59:02,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:59:02,919 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-09-25 00:59:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:03,470 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-09-25 00:59:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:59:03,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 00:59:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:03,473 INFO L225 Difference]: With dead ends: 271 [2020-09-25 00:59:03,473 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 00:59:03,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:59:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 00:59:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-09-25 00:59:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 00:59:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-09-25 00:59:03,484 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-09-25 00:59:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:03,484 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-09-25 00:59:03,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:59:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-09-25 00:59:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 00:59:03,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:03,491 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:03,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:59:03,491 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 00:59:03,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:03,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113872561] [2020-09-25 00:59:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:59:03,525 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:59:03,525 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:59:03,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:59:03,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:59:03 BoogieIcfgContainer [2020-09-25 00:59:03,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:59:03,562 INFO L168 Benchmark]: Toolchain (without parser) took 15451.41 ms. Allocated memory was 149.4 MB in the beginning and 340.3 MB in the end (delta: 190.8 MB). Free memory was 104.5 MB in the beginning and 194.8 MB in the end (delta: -90.3 MB). Peak memory consumption was 100.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,563 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 149.4 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.29 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 172.4 MB in the end (delta: -68.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,565 INFO L168 Benchmark]: Boogie Preprocessor took 95.50 ms. Allocated memory is still 206.0 MB. Free memory was 172.4 MB in the beginning and 169.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,566 INFO L168 Benchmark]: RCFGBuilder took 904.21 ms. Allocated memory is still 206.0 MB. Free memory was 169.2 MB in the beginning and 108.1 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,567 INFO L168 Benchmark]: TraceAbstraction took 13731.60 ms. Allocated memory was 206.0 MB in the beginning and 340.3 MB in the end (delta: 134.2 MB). Free memory was 108.1 MB in the beginning and 194.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:03,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 149.4 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.29 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 172.4 MB in the end (delta: -68.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.50 ms. Allocated memory is still 206.0 MB. Free memory was 172.4 MB in the beginning and 169.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 904.21 ms. Allocated memory is still 206.0 MB. Free memory was 169.2 MB in the beginning and 108.1 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13731.60 ms. Allocated memory was 206.0 MB in the beginning and 340.3 MB in the end (delta: 134.2 MB). Free memory was 108.1 MB in the beginning and 194.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 729 SDtfs, 768 SDslu, 802 SDs, 0 SdLazy, 995 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 28647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...